Nail-plate feeder



No Model.) 7 3 Sneets-Sheet 1) G. W. MoKIM.

NAIL PLATE FEEDER. No. 313,010. Patented Fgb. 24, 1885 WITNESSES:

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NAIL PLATE FEEDER. N'o.- 313,010. Patented Feb. 24, 1885.

WITNESSES INVENT R.

ATTORNEY/Y (No Model.) 3 Sheets-Sheet 3.

G. W. MoKIM.

NAIL PLATE EEEEEE. No. 313,010. Patented Feb; 24, 1885.

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GEORGE IV. MOKIM, OF MARTINS FERRY, OHIO.

NAIL-PLATE FEEDER.

SPECIFICATION forming part of Letters Patent No. 313,010, dated February24:, 1885.

Application filed May 10, 1884.

To all whom it may concern."

Be itknown that l, GEORGE W. MOKIM, a citizen of the United States,residing at Martins Ferry, in the county of Belmont and State of Ohio,have invented certain new and useful Improvements in Nail-Plate-FeedingMachines; and I do hereby declare that the following is a full, clear,and exact descrip tion, which will enable others skilled in the art towhich it appertains to make and use the same.

My invention relates to certain new and useful improvements forautomatically feeding nail-plates to the nail-machine, and to otherdevices by means of which the movements of the nail plate feeder are allobtained from a single eccentric mounted on the power-shaft of thenail-cutting machine.

My invention consists in a revolving barrel having spiral cogs orsegmentary screwthreads thereon, in combination with a pinion havingspiral cogs orsegmentary screw threads intergearing with said barrel,and in other devices and combinations, which will be fully understood bythe following description and claims.

Figure 1 is a side view of a nail-machine frame with my nai lplatefeeder attached th ereto. Fig. 2 is a detached view of the ratchet andparts connected therewith. Fig. 3 is a detached view of the oppositeside of the barrel, ratchet, and other parts. Fig. 4is a front view ofthe barrel and other parts connected Fig. 5 is adetached view of thebarrel. Fig. 6 is a longitudinal section through the barrel andnose-piece. Fig. 7 is a front view of thenos'epiece detached from thebarrel, Fig. 5. Sis a section of the jaws which support the forward endof the screw feed-bar. Fig. 9 is a crosssection of the nose-piece onlineww, Fig. 3. Fig. 10 shows the bevel y on the sta-i tionary jaw 3 andFig. ll is a horizontal section through the feed-rod, jaws, and die a.

In the drawings, the letter A indicates the frame or bed of anail-cutting machine of any description. Mounted on said frame isavertically-adjustable chair, B, to which is bolted an adjustablebed-plate, 0, having ears or lugs 0, between which is pivoted a curvedoscillating arm, D, provided with bearings E at its upper end, in whichis arranged to rotate a at each side of the barrel.

Fig.

(X0 model.)

hollow barrel, F, provided with spiral cogs or screwthreads f.

The letter G indicates a horizontal shaft, journaled in bearings H inthe uprights I, attached to the upper end ofthecurved arm, and Thisshaft extends across the barrel F at right angles to its axial line,andupon it is mounted a pinion, J, having a series of spiral cogs, j, onits periphery, which extend obliquely or angularly across its peripheryand in tergearing with the spirals of barrel F. The axial lines of thepinion and barrel are at right angles to each other. as will be seen byreference to the drawings. The pinion and the barrel are of equal orabout equal diameters; but the angle of the pitch of the cogs on thebarrel bears such relation to that of the pitch of the angle of the cogson the pinion that when in operation the motion will be as two to one;or, in other words, the barrel will travel twice as" fast as the pinion.One end of the horizontal shaft- G projects beyond its bearing, and hassecured to it a ratchet-wheel, K, which has four points, the said pointsbeing alternately engaged by the upper pawl. L, and lower pawl, L, whichare pivoted to the upper end of a stationary curved arm, h, and actalternately as the curved arm D is oscillated back and forth. By thehalf-revolution of eccentric I? the connecting rod N and the oscillatingarm D are moved either forward or backward, thus carrying theratchetwheel and cog-pinion one-eighth of a revolution at each forwardor'backward movement, there being sufficient lost motion between thepawls and the points of the ratchetwheel, not only to give a momentarypause to the turning of the barrel when the nose-piecc or nail-plate isresting on the cutting-bed A, but to rotate it only one-quarter of arevolution, instead of a half-revolution, as it would do were it not forsaid lost motion, and as the barrel travels twice as fast as said pinionand ratchet the. nail-plate in the barrel is turned halt'ofa revolutionby the united action of said forward and backward movement, and is thusproperly presented to the cutters. At or near the dead-points of theeccentric I and the con- IOC meeting-rod N, or between the forward andbackward stroke of the same, there is an interval of rest for thenail-plate (between the alternate action of the two pawls L and L, as

above described) of sufficient length for the cutters to make a strokeand thus cut a nail. This rest of the nail-plate allows the cutting-'dies of the nail-machine to make their stroke and properly performtheir work. Between the pawls seats are provided for two spiral springs,m, which bear against the heels of the pawls and insure their engagementwit-h the ratchet at the proper times, and seats are also provided forthe reception of the cushions R, which prevent anyjar in the operationof the pawls. The barrel F at the forward end has attached thereto anose-piece, S, having rabbeted iormson opposite sides, forming seats forthe adjustable guide-fingers T, which are confined by means of theflanged plates U, which extend well down over the fingers and hold themfirmly in place. These fingers are four in number and made inflexible.They grasp the nail-plate at the two lower corners, close to thecutting-bed A, when the plate is brought down upon said bed, ready forthe stroke of the cutter. The interior of the nose piece is providedwith right and left spirallyinclined planes n, Figs. (5 and 9, whichinvariably guide the nail-plate into the nose and to the guide-fingersT.

The nose-piece is made in two parts to facilitate casting, and issecured to the body of the barrel by a male and female joint, andsuitable bolts passing through slots, by which the nose-piece may beadjusted to set it properly in place, and to adjust it to compensate forwear of the gears of the pinion and barrel.

The guide-fingers T are made strong and rigid, so as not to spring, astheir office is to guide the nail-plate,and not to hold it temporarily,to enable the feed mechanism to act. The guide-fingers serve, besides,to carry the nail-plate and feed-nippers, as will be more fullyhereinafter explained.

The twoparts of the nose-piece are secured together by means of a band,V, which is passed around near the flange, and by' rivets in lugs W nearthe nose. The feed-rod N at its rear end is provided with adjustablenuts t t, one of which, it, has its forward face beveled, and is adaptedto abut against a bevel, M, on the stationary jaw y, Fig. 10, so as toshift the movable jaw y and stop the feed when the plate is used up. Thetension of the pivoted jaw is kept up by means of a spiral spring, g,which is regulated by a setserew, s. Thethreads of the feed-screw are ofsuch pitch as to advance the nail-plate the width of the nail at eachhalf-revolution, and they are rounded or beveled at such an angle as tolet the screw slip back past the movable jaw when any breakage orobstruction occurs in the nail-cutting machine, so as to stop the feedfor the time being. A stationary jaw, 3

is mounted on a base-piece, e, which is adjustably secured, by means ofbolts passing through a slot in said base-piece, to arearwardlyextending arm projecting from the curved oseillating arm D.The said stationary jaw is provided with an adjustable die, a, the inneredge of which'is in the form of a single thread corresponding to thethreads of the feed-screw. A short stub of a nail-plate is liable to bepushed by the nippers entirely forward out of the grooves o ofthenose'piece andthen twist against the nose-piece in being withdrawn.In order to prevent this, and also to assist in turning the feed-rod andstub, the nippers z are provided with guide-lugs p, to engage in saidgrooves 0, thus completely controlling the stub both in moving forwardand when it is withdrawn.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, 1s-

-1. The spirallycogged rotary barrel F, mounted in suitable bearings onan oscillating arm, D, in combination with the spirallycogged pinion j,mounted on a shaft at right angles to the axial line of the barrel, andintergearing with said barrel, the ratchethaving four points mounted onsaid shaft, and the pawls for operating the said ratchet, whereby thebarrel is caused to travel in the ratio of two to one with the pinion,substantially as and for the purpose specified.

2. In a nail-machine, the eombinatiomwith the barrel which revolves thenose-piece, of the feed-screw passing between a stationary and a pivotedjaw, the threads of the feedscrew being rounded or beveled at such anangle as to slip backward past the jaws when any obstruction is met within the nail-machine, substantially as and for the purpose set forth.

3. The combination of the feed-screw and feed-jaws, with the beveledstop-nut on the feed-screw adapted to abut against a bevelon thestationary jaw and throw the feed out of operation when the plate isused up, substantially as specified.

4. The combination of the nose-piece provided with rabbets,theinfleXiblegnide-fingers T, and the flanged plates U, substantially asset forth.

5. The combination, with the screw feedrod Z, carrying theplate-nippers, which latter are provided with guide-lugs P, of thenose-piece, grooved as shown, whereby the nose-piece, nippers, andnail-plate are made to turn together, substantially as set forth.

' GEO. W. MCKIM.

\Vitnesses:

DANIEL BREED, J. C.- LATHROP.

ICC

